Handle odd data lengths in UTF-16 decoder

Source/wtf/text/TextCodecUTF8.h

Index: Source/wtf/text/TextCodecUTF8.h
diff --git a/Source/wtf/text/TextCodecUTF8.h b/Source/wtf/text/TextCodecUTF8.h
index 2c8ed3d4e81a84020282a012dd831614ca230be0..98eb4932a52899c097d3910fd2fd70f36ff29c86 100644
--- a/Source/wtf/text/TextCodecUTF8.h
+++ b/Source/wtf/text/TextCodecUTF8.h
@@ -39,7 +39,7 @@ private:
     static PassOwnPtr<TextCodec> create(const TextEncoding&, const void*);
     TextCodecUTF8() : m_partialSequenceSize(0) { }
 
-    virtual String decode(const char*, size_t length, bool flush, bool stopOnError, bool& sawError) OVERRIDE;
+    virtual String decode(const char*, size_t length, FlushBehavior, bool stopOnError, bool& sawError) OVERRIDE;
     virtual CString encode(const UChar*, size_t length, UnencodableHandling) OVERRIDE;
     virtual CString encode(const LChar*, size_t length, UnencodableHandling) OVERRIDE;